Work around bulk_create consistency issues

 bulk_create ends up causing pk consistency issues when doing an update,
 even though we did a and the PK is clear. The .save() on each shockingly
 works. I'm switching this until this is entirely understood.

opencivicdata/management/commands/loaddivisions.py

@@ -37,7 +37,14 @@ def load_divisions(country):
         # delete old ids and add new ones all at once
         with transaction.atomic():
             Division.objects.filter(country=country).delete()
-            Division.objects.bulk_create(objects, batch_size=10000)
+            for object_ in objects:
+                object_.save()
+            # Division.objects.bulk_create(objects, batch_size=10000)
+            # XXX: The above line (bulk_create) ends up causing pk consistency
+            #      issues when doing an update, even though we did a delete
+            #      and the PK is clear. The .save() on each shockingly
+            #      works. I'm switching this until this is entirely
+            #      understood.
         print(len(objects), 'divisions created')